When working on a car it is important to have a visual aid to help. A maintenance manual to this car will have a wiring diagram.
follow this link it should help http://www.wirediagram.com/saturn.htm
fan does not kick on . when wired direct, it comes on. could it be the sensor?
Differentracing.com
In a 1993 Saturn SL1, the wire colors can vary depending on the specific component of the vehicle's electrical system. Typically, the wire colors may include red, black, white, blue, green, and yellow. It is recommended to use a wiring diagram specific to your vehicle to accurately identify the wire colors for any electrical connections.
you can get a service manual from the dealership, or if you are working on a specific problem email me at skippycow@gmail.com i have an electronic catalog complete with pictures for all the wireing diagrams.
are you sure the pioneer isn't after market? if it is here is the Saturn sl wiring diagram
You can find a wiring diagram for a 93 Saturn in the vehicle's owner's manual. You can also check with local auto part stores.
where can i get a free electric fuel pump wiring diagram for a 1997 Saturn swi
PCM, Relays, Power locks, wiring
You can get the wiring diagram in the Haynes Manual for 2002-2007 Saturn Vue at any parts store that sells Haynes. Price $19.99
Check the wiring on the starter. Also check all grounds
See the Related Links for "radio diagram" to the left for the answer.